staging: fwserial: fix TIOCSSERIAL permission check

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Changing the port close-delay parameter is a privileged operation so
make sure to return -EPERM if a regular user tries to change it.

Fixes: 7355ba3445 ("staging: fwserial: Add TTY-over-Firewire serial driver")
Cc: stable@vger.kernel.org      # 3.8
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210407102334.32361-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Johan Hovold 2021-04-07 12:23:20 +02:00 • committed by Greg Kroah-Hartman

parent 7a3791afdb

commit 2104eb283d

1 changed files with 6 additions and 2 deletions

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drivers/staging/fwserial/fwserial.c

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